Fluidampr Crank Pulley Performance Damper | Ford 302/351 Internally Balanced Engines (650231)

Harmonic Balancer For Ford 302/351 Internally Balanced Engines by Fluidampr

You can’t feel them or hear them, but harmonic vibrations are at work inside EVERY internal combustion engine. Similar to glass-shattering forces created by a high pitched note, harmonic vibrations cause metal fatigue and can cause significant power loss because crankshaft harmonics are transmitted to the camshaft and valvetrain.

Control this power-robbing force with a Fluidampr Harmonic Damper with race-proven vibration damping technology. A high viscosity silicone fluid surrounds a nylon-coated inertia ring inside a laser welded housing. All dampers are coated with black zinc chromate for increased corrosion resistance. Timing marks – every two degrees from 50° BTDC to 10° ATDC with additional marks at 90, 180 and 270. Meets SFI 18.1 specs.

Features

• Bore Diameter Min/Max: 1.374″ – 1.375″
• Degree Marking Range: 50 degrees BTDC to 10 degrees ATDC
• Degree Markings: Engraved
• Engine Balance: Internal
• Finish: Black Zinc
• Keyway: Single (3/16″)
• Length: 3.500″
• Material: Steel
• Mounting Hardware Included: No
• Outside Diameter: 6-5/8″
• Pulley Bolt Pattern: 4 bolt standard Ford pulley pattern. Pulley spacer (Fluidampr #717656) may be required on some 1975-later engines. Custom pulleys may be required on some 1969-earlier engines.
• Safety Rating: SFI 18.1
• Weight / Rotating Weight: 11.1 lbs / 7.4 lbs

Please Note: Replaces 28oz. external balance in custom builds. 4 bolt standard Ford pulley bolt pattern. Pulley space #717656 may be required on some 1975-later engines. Custom pulleys may be required on 1969 & earlier engines.

Applications

• Ford 302/351 Engines

What’s In The Box?

• 1 – Harmonic Balancer

References

• Installation Instructions

Warranty

• Manufacturer Standard Warranty